To simplify the expression \(2(x+1)(x+2)\), we can first expand the expression inside the parentheses:
\[ (x+1)(x+2) = x^2 + 2x + x + 2 = x^2 + 3x + 2 \]
Now, we multiply this result by 2:
\[ 2(x^2 + 3x + 2) = 2x^2 + 6x + 4 \]
Thus, another way to write the expression \(2(x+1)(x+2)\) is:
\[ \boxed{2x^2 + 6x + 4} \]